Function exception_handler

rpcs3/util/Thread.cpp:1744–1801

#ifdef _WIN32

static LONG exception_handler(PEXCEPTION_POINTERS pExp) noexcept
{
	if (pExp->ExceptionRecord->ExceptionCode == EXCEPTION_BREAKPOINT)
	{
		return EXCEPTION_CONTINUE_SEARCH;
	}

	const auto ptr = reinterpret_cast<u8*>(pExp->ExceptionRecord->ExceptionInformation[1]);
	const bool is_writing = pExp->ExceptionRecord->ExceptionInformation[0] == 1;
	const bool is_executing = pExp->ExceptionRecord->ExceptionInformation[0] == 8;

	if (pExp->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && !is_executing)
	{
		u32 addr = 0;

		if (auto [addr0, ok] = vm::try_get_addr(ptr); ok)
		{
			addr = addr0;
		}
		else if (const usz exec64 = (ptr - vm::g_exec_addr) / 2; exec64 <= u32{umax})
		{
			addr = static_cast<u32>(exec64);
		}
		else
		{
			return EXCEPTION_CONTINUE_SEARCH;
		}

		if (thread_ctrl::get_current() && handle_access_violation(addr, is_writing, pExp->ContextRecord))
		{
			return EXCEPTION_CONTINUE_EXECUTION;
		}
	}

	switch (pExp->ExceptionRecord->ExceptionCode)
	{
	case EXCEPTION_ACCESS_VIOLATION:
	case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
	case EXCEPTION_DATATYPE_MISALIGNMENT:
	case EXCEPTION_ILLEGAL_INSTRUCTION:
	case EXCEPTION_IN_PAGE_ERROR:
	case EXCEPTION_INT_DIVIDE_BY_ZERO:
	case EXCEPTION_NONCONTINUABLE_EXCEPTION:
	case EXCEPTION_PRIV_INSTRUCTION:
		// case EXCEPTION_STACK_OVERFLOW:
		{
			sys_log.notice("\n%s", dump_useful_thread_info());
			logs::listener::sync_all();
			break;
		}
	default:
	{
		break;
	}
	}

	return EXCEPTION_CONTINUE_SEARCH;
}